Question # 1

Heating a micture of sodium benzoate and soda lime gives

Choose an answer

Benzene

Methane

Sodium benzoate

Calcium benzoate

Variable valency is generally exhibited by

Choose an answer

Normal elements

Transition elements

Metallic elements

None of these

The wire in the flash bulbs is made up of

Choose an answer

Mg

Ba

Cu

Ag

If the solvent is inflammable for heating purpose we use

Choose an answer

Ice bath

Water bath

Wire gauze

Thermostat

At room temperature formaldehyde is

Choose an answer

Gas

Liquid

Solid

None of the above

Bleaching action of bleaching powder is due to the liberation of

Choose an answer

O₂

OCI^-

CI₂

CI^-

When KCIO₃ is heated it decomposes into KCI and O₂ if some MnO₂ is added the reaction goes much faster because

Choose an answer

MnO₂ decomposes to give O₂

MnO₂ provides heat by reacting

Better contact is provided by MnO₂

MnO₂ acts as a catalyst

The weight of 11.2 liters of CO₂ at S.T.P. would be

Choose an answer

88 g

44 g

32 g

22 g

Which of the following metal exhibits more than one oxidation?

Choose an answer

Na

Mg

Fe

AI

Wholer prepared ures from

Choose an answer

Ammonia

NH₄CNO

NH₃

uric acid

Which of the following fluorides of xenon in impossible?

Choose an answer

XeF₂

XeF₃

XeF₄

XeF₆

Which has maximum protein content?

Choose an answer

Ground nut

Cow milk

Egg

Wheat

Which of the following cannot be produced by acidic dehydration of alcohols?

Choose an answer

Ethers

Aldehyde

Alkyl Hydrogen sulphate

Alkene

One mole of gas refers to

Choose an answer

The number of molecules in one litre of gas

The number of molecules in one gram of gas

The number of molecules contained in 12 grams of ¹²C isotope

The number of molecules in 22.4 litres of a gas at S.T.P.

When electrons revolve in stationary orbits,

Choose an answer

There is no change in energy level

They vecome stationary

They are gaining kinetic energy

There is increase in energy

Ethyl chloride on treatment with aqueous alkali gives

Choose an answer

Ethane

Ethene

Ethanal

Ethanol

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

Choose an answer

Chlorination, nitration, reduction

Nitration, Chlorination, reduction

Nitration, reduction, chlorination

Nitration, reduction, acylation, chorination, hydrolysis

Salol is prepared from

Choose an answer

Salicyclic acid and phenol

Salicyclic acid and methyl alcohol.

Both

None

If the solvent is inflammable for heating purpose we use

Choose an answer

Ice bath

Water bath

Wire gauze

Thermostat

In N.W.F.P the phosphate fertilizers are produced at

Choose an answer

D.I.Khan

Haripur

Nowshera

Dargai

Phosphorus pentoxide finds use as

Choose an answer

An oxidizing agent

A reducing agent

a bleaching agent

A dehydration agent.

Bond angle is minimum for

Choose an answer

H₂O

H₂S

H₂Se

H₂Te

More Classes

Other Links

Chemistry General Science Test Hard Mode MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer